Carnival Corp. Adds Entertainment Offerings The same week that the company unveiled a new Voice-style competition aboard Princess Cruises, Carnival Corp. has announced the additions of more entertainment options across its brands. The Holland America Line has added professional dancers Tony and Kym Jonson, along with Carson Kressley and Florence Henderson, to its Dancing With the Stars cruise. The newest Seabourn ship, the Seabourn Encore, will get a new show lounge, The Grand Salon, which will be the host of the cruise line’s enrichment series, Seabourn Conversations. The company also announced that Carnival Cruise Lines’ Carnival Live concert series will feature musical guests Boston, Lionel Richie and Heart onboard select ships later this month.